SYNOPSIS

DESCRIPTION

The IEEE 754 standard defines rounding precision modes for
systems that always deliver intermediate results to destina-
tions in extended double precision format. These modes
allow such systems to deliver correctly rounded single and
double precision results (in the absence of underflow and
overflow) with only one rounding.
fesetprec(prec) sets the current rounding precision to the
precision specified by prec, which must be one of the fol-
lowing values (defined in <fenv.h>):
FE_FLTPREC round to single precision
FE_DBLPREC round to double precision
FE_LDBLPREC round to extended double precision
The default precision is FE_LDBLPREC (unless it is changed
by the -fprecision compiler flag).
fegetprec() returns the current rounding precision.

RETURN VALUES

fesetprec returns a nonzero value if the requested rounding
precision is established and returns zero otherwise.

SEE ALSO

fegetenv(3M), fesetround(3M), attributes(5)NumericalComputationGuide

NOTES

As shown in the synopsis, the recommended way to link with
libm9x using cc is to specify
-Rinstall-path/lib -Linstall-path/lib -lm9x
on the command line, where install-path refers to the loca-
tion in which the compilers are installed (/opt/SUNWspro by
default). See the NumericalComputationGuide for addi-
tional information about linking with libm9x.